Sunday
May 19, 2013

# Homework Help: Computers: Computer Science

Recent Homework Questions About Computer Science

science
where does the water on the outside of a glass cup come from
Wednesday, October 24, 2012 at 9:20pm

science
What property of gases allow them to completely fill whatever space they are in?
Wednesday, October 24, 2012 at 9:15pm

science
How tall is the tree if the sun is at a 53° angle above the horizon and the shadow is 8.0 meters long?
Wednesday, October 24, 2012 at 9:14pm

Science
I need help with coming up a hypothesis for and Organic Compound lab! Anyone have an idea?
Wednesday, October 24, 2012 at 9:02pm

science(word definitions)
whats the difference between the words dominant and recessive
Wednesday, October 24, 2012 at 9:00pm

Physical Science
Sound travels about 1530 m/s in sea water. How many times faster does sound travel in sea water than in air? (The speed of sound in air at 25°C is about 345 m/s.)
Wednesday, October 24, 2012 at 8:20pm

science
what are some interactions that can take place when a beam of light hits a glass tank and then enters the water
Wednesday, October 24, 2012 at 6:08pm

science
How do you know a television change electricity into light energy? What other form energy is produced?
Wednesday, October 24, 2012 at 5:30pm

science
Where in nature could you find a source of the same energy as that provided by batteries? explain
Wednesday, October 24, 2012 at 4:35pm

science
A reaction took place between a magnesium and florine in a large empty container if attraction and repulsive between these atom are equal at a distance of 0.001*10^-10m, calculate the couloumbic force between two atoms.
Wednesday, October 24, 2012 at 1:55pm

science
How to count atoms ?
Wednesday, October 24, 2012 at 11:50am

physics
A computer is reading data from a rotating CD-ROM. At a point that is 0.0382 m from the center of the disk, the centripetal acceleration is 118 m/s2. What is the centripetal acceleration at a point that is 0.0791 m from the center of the disc?
Wednesday, October 24, 2012 at 10:01am

Math
Ryan brought a red milk snake to show during science class. Then snake is 56 centimeters long. Find its length to the nearest whole inch.
Wednesday, October 24, 2012 at 3:29am

science
What is the velocity of a car traveling from the east coast to the west coast at an average speed of 50 kph?
Tuesday, October 23, 2012 at 10:21pm

have no idea what these answers are. Thanks! 1. Explain in detail one of the climate change cause-and effect relationships. 2. Explain why a new moon is not visible and the difference between the waxing and waning phases of the moon.
Tuesday, October 23, 2012 at 9:33pm

Computers
What are some computer work related disorders?
Tuesday, October 23, 2012 at 9:32pm

Computers
May you please identify poor computer ergonomics.
Tuesday, October 23, 2012 at 9:30pm

science
what is the density if the mass is 17g and the volume is 34cm3 ?
Tuesday, October 23, 2012 at 9:14pm

7th grade science bobpursley or Ms. sue please
Can you guys help me please? I have no idea what these answers are. Thanks! 1. Explain in detail one of the climate change cause-and effect relationships. 2. Explain why a new moon is not visible and the difference between the waxing and waning phases of the moon.
Tuesday, October 23, 2012 at 7:28pm

science
what is the definition of special properties
Tuesday, October 23, 2012 at 7:13pm

Science Fair
Hi, my question is are part 1,2, and 3 different ways you can do the project? There are three parts. Each part should take less than 1 hour. In Part 1, you will stare at a colored object for various amounts of time, then measure how long it takes for the afterimage to ...
Tuesday, October 23, 2012 at 6:21pm

physical science
How much heat is absorbed by a persons hand if 100 grams of liquid water at 100°C is poured on his hand? (Assume the final temperature of the water will be normal body temperature of 37°C)
Tuesday, October 23, 2012 at 5:41pm

Science
How many calories of heat are required to change 1 gram of ice at 0°C to liquid water at 0°C?
Tuesday, October 23, 2012 at 5:40pm

science
the ski lift chair at a ski report is 2560m long. on average, the ski lift rises 15.2 degree above the horizontal. how high is the top of the ski lift relative to the base?
Tuesday, October 23, 2012 at 1:34pm

Science
Choose an ecosystem to research with regard to abiotic factors and how organisms in that particular ecosystem depend on those abiotic factors. Write a paragraph that describes the ecosystem that you selected and how organisms compete for abiotic factors within that ecosystem. ...
Tuesday, October 23, 2012 at 1:32pm

Science - Chemistry!!!
A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0°C. Assume that no heat is lost to the surroundings and that all the kinetic energy of the bullet is ...
Tuesday, October 23, 2012 at 11:07am

Science
2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
Tuesday, October 23, 2012 at 8:51am

Science
2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
Tuesday, October 23, 2012 at 8:50am

Science
2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
Tuesday, October 23, 2012 at 8:49am

Physical Science
If liquid pressure were the same at all depths, would there be a buoyant force on an object submerged in the liquid?
Tuesday, October 23, 2012 at 6:28am

physical science
how much heat is absorbed by contacting 10 grams of 100 degree C steam by a students hand.
Monday, October 22, 2012 at 10:17pm

physical science
how much heat is absorbed by pouring 10 grams of 100 degree C liquid water on a students hand. The water is cooled to body temperature 37 degree C
Monday, October 22, 2012 at 10:14pm

science
These are the 3 questions that will help me study for my test. i need help understanding each of these thankyou :) Distinguish between microevolution and macroevolution. Explain how forest organisms (producers and consumers) separated by a highway could evolve into different ...
Monday, October 22, 2012 at 9:28pm

Science 207
As we reach a possible peak in oil production, what alternatives are forming? Consider the role of OPEC, perhaps in reorganizing and monitoring oil production. What do you think is the most viable way to address after effects of this possible peak?
Monday, October 22, 2012 at 8:52pm

Physics
In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer space. From stationary positions they push against each other. Bonzo flies off with a velocity of +1.7 m/s, while Ender recoils with a velocity of −2.7 m/s. (b) Determine the ratio mBonzo/...
Monday, October 22, 2012 at 7:29pm

soicial studys help plz
1. Who was the French absolute monarch who called himself the "Sun King" to show that he was the center of the French nation? (1 point)Cardinal Richelieu Louis XIII Louis XIV Versailles 2. The Elizabethan Age was considered a golden age due to all of the following ...
Monday, October 22, 2012 at 5:27pm

science
Is a mineral a crystal?
Monday, October 22, 2012 at 4:15pm

science
A balloon with an initial volume of 2.8L at a temperature of 296K is warmed to 375K . What is its volume at the final temperature? (Assume constant pressure.)
Monday, October 22, 2012 at 3:33pm

Sci 207 wk 2 lab 2
Which species appear to benefit from increasing fragmentation? Which species are negatively impacted? Based on your knowledge of environmental science, what could explain these observations? Support your answer with specific results from your data and ideas from your readings
Monday, October 22, 2012 at 3:17pm

Science Help!
How much heat is needed to cause the following irreversible reaction? 200 g of liquid H2O at 50°C is heated to form 200 g of steam at 120°C
Monday, October 22, 2012 at 2:27pm

Science
How much heat must be removed from 500 grams of water at 0°C to form ice at 0°C?
Monday, October 22, 2012 at 2:22pm

science
you are sledding on a snow-covered hill at a speed of 6 m/s there is a drop that increases your speed to 12 m/s in 4 s. find your acceleration? i need help answer?
Monday, October 22, 2012 at 1:49pm

Physical Science
How much heat is absorbed by pouring 10 grams of 100°C liquid water on a student’s hand. The water is cooled to body temperature, 37°C. Assume that all of the heat is absorbed by the hand
Monday, October 22, 2012 at 12:49pm

PHYSICAL SCIENCE
How do the pressure variation with depth affect our ability to explore the ocean?
Monday, October 22, 2012 at 5:28am

science
at what age does brain stops developing
Monday, October 22, 2012 at 1:23am

Science
What are some websites that gives facts about Weed Killer? How do I start an investigation report about this subject? Please help ... anyone?
Sunday, October 21, 2012 at 10:03pm

science
mass is 64.0 and volume is 16.0 what is the density?
Sunday, October 21, 2012 at 9:16pm

SCIENCE
HOW DOES KINETIC ENERGY DEPEND ON MASS?
Sunday, October 21, 2012 at 8:02pm

Physical science
What is the gravitational potential energy of a 5kg object resting 3m above the ground?
Sunday, October 21, 2012 at 3:40pm

science
Three lead balls of mass m1 = 14 kg, m2 = 26 kg, and m3 = 8.7 kg are arranged as shown in the figure below. Find the total gravitational force exerted by balls 1 and 2 on ball 3. Be sure to give the magnitude and the direction of this force.
Sunday, October 21, 2012 at 5:32am

science
A positive charge of 3.50 µC is located in an electric field of intensity 3.00 N/C directed toward the south. Find the magnitude and the direction of the force on the test charge. (remember E = Fon q' / q', and 1 µC = 1.00 x 10-6 C) a. 8.6 x 105 toward the ...
Saturday, October 20, 2012 at 10:24pm

i need help ss
1. Because there was a reawakening of interest in art, literature, and science between 1300 and 1600, it is fitting to call this period the Renaissance, since it means _____. (1 point)learning knowledge "out with the old" rebirth 2. During the Middle Ages, why was ...
Saturday, October 20, 2012 at 9:46pm

soical studys
1. Because there was a reawakening of interest in art, literature, and science between 1300 and 1600, it is fitting to call this period the Renaissance, since it means _____. (1 point)learning knowledge "out with the old" rebirth 2. During the Middle Ages, why was ...
Saturday, October 20, 2012 at 9:45pm

math
Suppose a computer virus begins by infecting 8 computers in the first hour it is released. Each hour after that, each newly infected computer causes 8 more computers to become infected. The function y = 8 (exponent x) models this situation. make a table with integer values of ...
Saturday, October 20, 2012 at 6:59pm

Science (Human Anatomy)
THIS QUESTION IS WORTH 50 MARKS I NEED SOURCES AS WELL Relate their structure of a neuron to the anatomy of the cerebral cortex and spinal cord Be sure to discuss the locations of soma, axons, dendrites, and supportive cells in each area.
Saturday, October 20, 2012 at 6:09pm

Science (Human Anatomy)
THIS QUESTION IS WORTH 50 MARKS I NEED SOURCES AS WELL Give 2 different reasons why two muscles that act across the same side of the same joint are not necessarily redundant? Explain your reasons in detail and give at one real example that illustrates each reason.
Saturday, October 20, 2012 at 6:09pm

math
by selling 90 computer a shopkeeper gains the amount which is equal to the selling price of 10 computer find the profit percent ? had he purchased them for rupees 30000 each what would have been the selling price of a computer ??
Saturday, October 20, 2012 at 11:06am

when hugo was 9 years old he was 56 inches tall. hugo is now 12 years old and he is 62 inches tall. fins the percent of increase in hugos height to the nearest tenth a customer earned 3262.50 interest on a 9-month cd. how much was the opening deposit total cost-- 1600 boat, 5....
Saturday, October 20, 2012 at 2:18am

Math Statistics
The table below shows Rico’s grades during the third term in four subjects. Subject Units Grade Math 1.5 98 Science 2 97 English 1.5 95 A.P. 1 99 What was Rico’s average grade in the four subjects?
Friday, October 19, 2012 at 11:30pm

Physical Science
Friday, October 19, 2012 at 9:03pm

Science
10.0 g of KCl and 18.5 g of CaCl2 were dissolved in 500 mL of water. How many mL of 1.57 M AgNO3 solution would be required to precipitate all Cl- from the solution?
Friday, October 19, 2012 at 2:31pm

Science
Calculate the molarity of the following solution: 7.48g of calcium chloride (CaCl2) in 215 mL of aquous solution.
Friday, October 19, 2012 at 2:30pm

Science
when do human interventions in water availability pose serious problems to freshwater accessability?
Friday, October 19, 2012 at 2:02pm

science- physics
A rotating wheel requires 4.17 s to rotate through 37 rev. Its angular speed at the end of the 4.17 s interval is 104 rad/s. What is its constant angular acceleration? Assume the angular acceleration has the same sign as the angular velocity.
Friday, October 19, 2012 at 12:38pm

Friday, October 19, 2012 at 12:13pm

Accounting
Financial Accounting 1. The following information was made available from the income statement and balance sheet of Meranda Company: ITEM 12/31/2010 12/31/2009 Accounts Receivable $42,000$ 45,100 Accounts Payable 27,900 24,500 Merchandise Inventory 68,000 63,000 Sales (2010...
Friday, October 19, 2012 at 9:41am

According to science, the fastest speed possible for anything is the speed of light. The speed of light is about 186,000 miles per second. That means that in one minute, light travels 11,160,000 miles. The star nearest Earth is the Sun. It's about 93,000,000 miles from ...
Friday, October 19, 2012 at 7:17am

science
Will the current flow when neutron or proton are in the place of electron.if yes , then explain how and if answer is no then describe why.
Friday, October 19, 2012 at 4:35am

science[physics]
three masses 3kg,4kg,5kg are located at corners of an equilateral triangle of side 1m.locate the centre of mass of the system
Friday, October 19, 2012 at 1:41am

Science
Can a barge carry a heavier load without sinking in fresh water or salt water
Thursday, October 18, 2012 at 11:06pm

how does the dna of prokaryotic and eukaryotic cells differ?
Thursday, October 18, 2012 at 8:16pm

science
How is a drop of water an element? PLEASE HELP!!!
Thursday, October 18, 2012 at 7:36pm

Science math
Can no one help me? I posted a question earlier I don't need answer I need to understand what I did wrong my thinking is that if I have a 2:1 ratio And my total is 99 that if I divide by 3 then I can get the amounts 33x2 is 66, then 33x1 is 33 so it would be 66:33. I used ...
Thursday, October 18, 2012 at 6:52pm

Science-math
The equation for the decomposition of silver oxide is 2(Ag2)o yields 4Ag +o2. Set up ratio to calculate the number of oxygen molecules released when 1 gram of silver oxide is broken down. There are 2.6 x 10 to 21 power molecules in 1 gram of silver oxide. I know that it is a 2...
Thursday, October 18, 2012 at 5:50pm

Science
Chemistry Enthalpy Calculations? Given the equation: CaO + H2O ----> Ca(OH)2 A 1 g sample of CaO is dissolved in 100 ml water with density 1.00g/ml. The temperature rise is 3.7 degrees C. The specific heat is 4.00 J/g*deg. 1. Calculate the heat (in J) absorbed/given off by ...
Thursday, October 18, 2012 at 5:46pm

Science
You know that a gas in a sealed container has a pressure of 111kPa at 23 Celsius. What will the pressure be if the temperature rises to 475 Celsius?
Thursday, October 18, 2012 at 5:11pm

science
a person needs to push a lever down with a force of 16.5N and a distance of 0.75 to lift the rock 0.25m. how much work is done?
Thursday, October 18, 2012 at 5:08pm

Physical Science
A block of ice at 0^\circ {\rm C} is dropped from a height that causes it to completely melt upon impact. Assume that there is no air resistance and that all the energy goes into melting the ice. What is the height necessary for this to occur.
Thursday, October 18, 2012 at 4:07pm

12th science (mathbio) biology
Two plants biological information
Thursday, October 18, 2012 at 4:14am

Mathbio in 12th science
When particle revolves with uniform speed on a circular path a)no force act on it b)no excellaration acts on it c)no work is done on it d)its velocity is constant answer this mcq
Thursday, October 18, 2012 at 12:54am

Mathbio in 12th science
2)a stone of mass 1kg tied to one end of a string of length 1m whirld in a horizontal circle with a costant speed 2 radian/second tension of the string is. A)0.5n b)1n c)2n d)4n 3)the orbital velocity of a satelight close to the earth is v then the orbital velocity at a height...
Thursday, October 18, 2012 at 12:51am

Mathbio in 12th science
When particle revolves with uniform speed on a circular path a)no force act on it b)no excellaration acts on it c)no work is done on it d)its velocity is constant answer this mcq
Thursday, October 18, 2012 at 12:21am

science
If wood weights 18 grams with a density of 0.5 what is the volume ans what type of wood is it
Wednesday, October 17, 2012 at 11:39pm

1. Venus's surface temperature is ____ than Earth's surface temperature. cooler much cooler hotter none of these isn't the answer hotter because Venus has a denser atmosphere, so the temperature would be higher?
Wednesday, October 17, 2012 at 11:28pm

7th grade science help the solar system Ms. Sue
1. Most likely, ____ were formed when lava from the moon's interior flooded bowl-like regions on the moon's surface. (1 point) maria highlands craters basins 2. Depressions on the moon formed by large meteorites are called ____. (1 point) maria mountains craters ...
Wednesday, October 17, 2012 at 10:49pm

Science
humans,other mammals,birds can maintain a constant body temperature. why is this a useful adaptation? how does this explain the spread of these animals around earth?
Wednesday, October 17, 2012 at 10:43pm

science
what can happen if there is a large solar flare like there was in 1989 and 1997 ?
Wednesday, October 17, 2012 at 10:31pm

science
what does an albedo of 1.0 mean ??
Wednesday, October 17, 2012 at 10:30pm

science
what type of radiation causes skin damage ??
Wednesday, October 17, 2012 at 10:29pm

science
where does the earth loose energy to ??
Wednesday, October 17, 2012 at 10:28pm

science
how do geologist use different type of crystal shapes to classify minerals
Wednesday, October 17, 2012 at 10:01pm

science
how does the composition of most minerals differ from a pure elements
Wednesday, October 17, 2012 at 9:56pm

physical science
A clam is dropped by a seagull it takes 3 seconds to hit the ground. what is the seagulls height approximate height above the ground at the time the clam was dropped?
Wednesday, October 17, 2012 at 9:40pm

science
Can venus be seen at night without a telescope?
Wednesday, October 17, 2012 at 7:11pm

science
what in nature could you find a source of the same energy as that provided by batteries?
Wednesday, October 17, 2012 at 5:35pm

science
The block of mass 4.44723 kg has an acceleration of 4.6 m/s^2 4.44723 kg F is at 30◦ a What is the magnitude of F? Assume the acceleration due to gravity is 9.8 m/s 2 and the surface is frictionless. Answer in units of N
Wednesday, October 17, 2012 at 4:24pm

science
A 14700 kg sailboat experiences an eastward force of 29800 N due to tide pushing its hull while the wind pushes the sails with a force of 81500 N directed toward the northwest (45◦ westward of North or 45◦ northward of West). What is the magnitude of the resultant ...
Wednesday, October 17, 2012 at 4:22pm

physics
A 13 N force with a fixed orientation does work on a particle as the particle moves through displacement . What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +9.19 J and (b) -9.19 J?
Wednesday, October 17, 2012 at 4:19pm

science
Is glucose molecules broken down in both hases of respiration?
Wednesday, October 17, 2012 at 4:04pm

science
need help with what are the raw materials of respiration and their products?
Wednesday, October 17, 2012 at 3:58pm

Science
19. Which of the following base unit definitions was changed from being based on an arc of the earth to a time interval of light? second kilogram meter candela
Wednesday, October 17, 2012 at 7:43am

Science
. Which of the following is a measure of motion, with the derived units in m/s? power force resistance speed
Wednesday, October 17, 2012 at 7:37am

Science
Which of the following represents a decimal system of measurement? 1 quart = 16 fluid ounces 1 mile = 5,280 feet 1 kilometer = 1,000 meters 1 pound = 16 ounces
Wednesday, October 17, 2012 at 6:56am

SCIENCE
WHY NO2 IN VAPOUR STATE IS COOURED AND PARAMAGNETIC, BUT THE SAME COLOURLESS AND DIAMAGNETIC IN THE SOLID STATE
Wednesday, October 17, 2012 at 5:18am

Social Science Capstone
Ethical Research in the Social Sciences Find the most interesting, bizarre, or blatant example of a violation of good ethical conduct in research in the social sciences. Explain the experiment. What theories, ideas, behaviors, or phenomena were being analyzed? What were the ...
Tuesday, October 16, 2012 at 11:27pm

Science
A perfectly square ice cube measures 3cm on each side.It has a mass of 24.6g.Whatcis the density of the ice cube.
Tuesday, October 16, 2012 at 10:32pm

Physical science
A hot iron ball is dropped into 200g of cooler water. The water temperature increases by 2.0 degrees C and the temperature of the ball decreases by18.6 degrees C. What is the mass of the iron ball?
Tuesday, October 16, 2012 at 9:33pm

science
Also is did cassini send out a space probe or satellite?
Tuesday, October 16, 2012 at 6:54pm

science
Did Cassini complete his mission to go around saturn?
Tuesday, October 16, 2012 at 6:50pm

Science
a 2000-kg car traveling at 8 m/s strikes a stationary car whose mass is the same. The two cars stick together after the crash. What is their speed just afterward?
Tuesday, October 16, 2012 at 5:25pm

Science
How do you find the volume of hydrogen gas produced?
Tuesday, October 16, 2012 at 1:00pm

Science
How do meteorologists combine data from weather radar and weather satellites to gather information about the atmosphere?
Tuesday, October 16, 2012 at 11:53am

science
i need to create a specimen for a diorama using vascular or non-vascular plant dont know how to begin
Monday, October 15, 2012 at 8:53pm

Science 8R - Homework Qs. Check
If an object has mass of 70.5g and a volume of 64 cm(3), what is its Density? Will it sink or float and why? Answer - The Density of this object is 4512g/cm(3). It will sink because the amount of grams is a lot. Is the answer correct and good???? I multiplied 70.5 and 64 in ...
Monday, October 15, 2012 at 8:27pm

science
what science word can be formed using these letters ECREFENINE?
Monday, October 15, 2012 at 5:59pm

science
if an object covers a large enough area of the water's surface, it can float on the water because of the________of water particles
Monday, October 15, 2012 at 5:47pm

science
changing the mass or volume of an object changes its density and ?
Monday, October 15, 2012 at 5:43pm

COMPUTER SCIENCE JAVA
Assignment problems: Write Java programs for each of the following. 1. Students in a university class are being organized into groups of three for an upcoming research project. To model this situation: a. Write a Student class that stores the name, email address and phone ...
Monday, October 15, 2012 at 5:01pm

COMPUTER SCIENCE JAVA
Assignment problems: Write Java programs for each of the following. 1. Students in a university class are being organized into groups of three for an upcoming research project. To model this situation: a. Write a Student class that stores the name, email address and phone ...
Monday, October 15, 2012 at 4:52pm

English
What is can find in the following sentence: You can find properties of science in a basic clock. A. Main verb B. Helping verb C. Both D. Neither I say it is C Both, is this right?
Monday, October 15, 2012 at 4:09pm

Science
You have a stock solution of 3.5M glucose. You need a working solution of 0.5M glucose in a volume of 400ml. Explain how you make the solution. Also what is the concentration of the dilution solution?
Monday, October 15, 2012 at 10:10am

Science
If Sam weigs 114kg on earth what is his mass on the moon
Monday, October 15, 2012 at 6:42am

Science
If Sam weights 114kg on earth what is his mass on the moon
Monday, October 15, 2012 at 6:32am

science
i need an acrostic poem of the word eukaryotic
Monday, October 15, 2012 at 12:50am

computer science
Write an Assembly program to determine the price of a car rental. The car being rented costs $45 per day and frequent renters get a$15 discount on the total bill. Get as input, the number of days rented and whether the user is part of the frequent renter program (have user ...
Monday, October 15, 2012 at 12:47am

Science
Make a spreadsheet to display how the total mass of a 500-kg elevator changes as 50-kg passengers are added one at a time.
Sunday, October 14, 2012 at 10:57pm

Science
Which of the following is not an example of a soft-path solution? a) Community-operated ditches b) Micro-sprinkler systems c) New cross-country pipelines d) Protecting a pond’s ecosystem I believe that the answer is...a
Sunday, October 14, 2012 at 10:30pm

Science
A car is traveling down a hill that makes an angle of 14° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is μK = 0.55.
Sunday, October 14, 2012 at 8:53pm

science
A transformer has 3,000 loops in its primary coil and 1,500 loops in its secondary coil. What is the voltage in the secondary coil if the voltage in the primary coil is 120 V?
Sunday, October 14, 2012 at 8:27pm

computers
Which graphical input source acts like a copy machine but copies the image to the computer instead of paper?
Sunday, October 14, 2012 at 5:04pm

Computer Science
when testing for a fever, what is the true positive rate for a thermometer that always reads 105 F? What is the false positive rate? **Note: the definition of fever is that the patients temperature exceeds 100 F**
Sunday, October 14, 2012 at 4:49pm

Political Science
What are the factors that keep an ideology alive? How does an ideology survive through decades? Is it because of the people, economic structure of a state or simply that once an ideological concept has been developed that it cannot truly disappear?
Sunday, October 14, 2012 at 4:45pm

Science/chemistry
Is PO3 a mixture or compound. Is MgCl a mixture or compound. Thanks
Sunday, October 14, 2012 at 3:57pm

science
If a projectile is fired straight up at a speed of 13m/s. How long does it take to reach the top of its motion? If the acceleration due to gravity is 9.8m/ s motion (squared) answer in units of s
Sunday, October 14, 2012 at 2:38pm

Science
How would you prepare 10 mL of 0.08 M NaCl in sodium acetate buffer? (Stock Sodium acetate buffer: 0.1 M)
Sunday, October 14, 2012 at 2:17pm

science
jay heated 120mL of water that was 20 degrees celsius to 80 degrees celsius. a)how much did the temperature of water change? b) how much heat did jay add to the water? c) if jay used a liquid that was not water, the specific heat would not equal:(circle best answer) 0cal/g/...
Sunday, October 14, 2012 at 1:20pm

science
sally had 20g of water and it started at a temperature of 26 degrees celsius and sally cooled it to 22 degrees celsius. a)how much did the temperature of water change? (show work) B) how many calories did sally's water lose?
Sunday, October 14, 2012 at 1:15pm

science
It says; the temperature of 50g of water was raised from 5 degrees celsius to 85 degrees celsius. then it asks me: what amount or mass of water was heated? how do i find that out?
Sunday, October 14, 2012 at 1:08pm

Science- Chemistry
In the standard deviation, the decimal place of the first non-zero digit indicates where the precision of the average ends (decimal place where the individual results deviate from each other). All your mass readings have 5-6 significant figures, so one might expect a standard ...
Saturday, October 13, 2012 at 10:13pm

Science
How can community growth affect local ecosystems?
Saturday, October 13, 2012 at 9:05pm

Science- Chemistry
A test tube containing a mixture of compounds X, Y, and a small amount of Z weighs 25.4886 g. The tube is emptied into a beaker and the empty tube is reweighed, giving a value of 10.2586 g. The mixture is separated into two components by dissolving in water, filtering off the ...
Saturday, October 13, 2012 at 5:51pm

physical science
A 0.50 kg block initially at rest on a frictionless horizontal surface is acted upon by a force of 8.0 N for a distance of 7.5 m. What is the velocity of the block in m/s?
Saturday, October 13, 2012 at 4:55pm

science-physics
A machine gun of mass 10 kg fires 20g bullets at the rate of 10 bullets per second, with the speed of 500 m/s. What is the force necessary to hold the gun in position?
Saturday, October 13, 2012 at 3:13pm

SCIENCE
Why might there be different kinds of thermometers for measuring temperature?
Saturday, October 13, 2012 at 9:01am

science
Explain how to measure the volume of a rock by water displacement?
Friday, October 12, 2012 at 8:09pm

science
40 centimeters cubed of dry sand is added to a graduated cylinder containing water, the level of the liquid rose 15 centimeters cubed on the scale. What is the volume, in centimeters cubed of air in the sand?
Friday, October 12, 2012 at 8:08pm

science
A 10 centimeters cubed sample of salt having a mass of 8 grams is added to 20 centimeters cubed of water having a mass of 15 grams. What is the mass of the mixture?
Friday, October 12, 2012 at 8:07pm

Physical Science
You submerge 100 grams of steel in 200 grams of water. If the steel has an initial temperature of 80°C and the water has an initial temperature of 10°C, what is the final temperature of the system? The specific heat capacity of the steel is 0.15 cal/g•°C
Friday, October 12, 2012 at 5:19pm

science
You wish to heat 30 kg of water from 60°C to 80°C. How many kcal of heat are necessary to do this? To how many kJ does this correspond?
Friday, October 12, 2012 at 5:09pm

physical science
suppose you want to heat 40g of water by 20c.how many joules of heat are required
Friday, October 12, 2012 at 4:24pm

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